Fix _StateMachine's handleProgress() which stores progressValue when state is not '.Running'.
Fix _StateMachine's handleProgress() which stores progressValue when state is not '.Running'.

msdgwzhy6/SwiftTask,marinehero/SwiftTask,marinehero/SwiftTask,iosyoujian/SwiftTask,ReactKit/SwiftTask,luzefeng/SwiftTask,msdgwzhy6/SwiftTask,iosyoujian/SwiftTask,marinehero/SwiftTask,ReactKit/SwiftTask,msdgwzhy6/SwiftTask,iosyoujian/SwiftTask,luzefeng/SwiftTask,msdgwzhy6/SwiftTask,iosyoujian/SwiftTask,marinehero/SwiftTask,ReactKit/SwiftTask,luzefeng/SwiftTask,luzefeng/SwiftTask